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dreller
2015 May 25
0
foreach hangs when using doMPI on Windows with Microsoft MPI
...;of", mpi.comm.size()))
# Hangs at this point
# Main process and worker processes are all idle
ni <- foreach(i=1:10) %dopar% {
paste(Sys.info()[['nodename']], Sys.getpid(), mpi.comm.rank(), "of", mpi.comm.size())
}
mpi.close.Rslaves()
mpi.quit()
Prints:
C:\Users\dteller\Documents\MPI>"C:\Program Files\Microsoft MPI\Bin\mpiexec" -n 3
"C:\Program Files\R\R-3.2.0\bin\x64\Rterm.exe" --no-save -q -f "MPI Test.r"
master (rank 0, comm 1) of size 3 is running on: dteller-dv7
slave1 (rank 1, comm 1) of size 3 is running on: dteller-dv7
sla...
2003 Aug 25
2
R Memory Management Under Windows (PR#3980)
Full_Name: David Teller
Version: 1.7.1
OS: Windows XP
Submission from: (NULL) (12.110.141.194)
I've noticed several issues with the R memory management under Windows.
It frequently runs out of memory, even when there is plenty of available memory
on the system and even plenty of free process virtual address space.
This tends to happen far more often when allocation a number of large objects